Fastener with tie belt adjustment function

ABSTRACT

A fastener with tie belt adjustment function primarily structured to comprise a socket joint and a clasp, and is characterized in that a moveable pressure plate is disposedly configured on an upper portion of the clasp, and a L-shaped flexible structural member is positionally configured below a front end of the moveable pressure plate. According to the aforementioned, because the L-shaped flexible structural member and the clasp of the fastener with tie belt adjustment function are fabricated so as to form an integral body, and thus additional configuration of a spring is unnecessary, and is capable of preventing detachment of the spring and impairment thereof, thereby achieving effectiveness of saving on costs.

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The present invention relates to a fastener with tie belt adjustmentfunction, and more particularly to a fastener capable of preventingdetachment of a spring and impairment thereof, and thereby achieveseffectiveness of saving on costs.

(b) Description of the Prior Art

Wearing of swimming flippers effectuates increasing surface area ofthrashing strokes, which thereby realizes a large increase in waterdisplacement propulsion efficiency, and a substantial saving in physicalstrength required. Upon swimming into a current flow or waves, a pair ofineffective swimming flippers is similar to having no feet on land.

The swimming flippers are categorized as pertaining to that of a shoetype or a heelless type. A shoe portion of each of the shoe typeswimming flippers enfolds the foot similar to that of a shoe. The shoeportion of the heelless type swimming flippers is relatively wider, andnecessitates first putting on diving boots, and thereafter the swimmingflippers. When diving, if there is no boat to proceed towards a divingpoint, then a walk to a water entrance point near to the bank iscertainly necessary, and section of road which must be traveled along ismore than often bumpy, rugged and difficult to walk upon, thus wearingof the diving boots to protect the feet is necessary. The shoe portionof such swimming flippers is heelless, and thus named heelless typeswimming flippers. A fastener with tie belt adjustment function can beutilized to adjust a fixing tie belt, and thus is also named adjustableswimming flippers.

Referring to FIG. 5, which shows a conventional fastener with tie beltadjustment function primarily embodying a socket joint a and a clasp b.Openings a1 are defined in each of two sides of the socket joint a, andclasp pieces b1 are configured on a front end of the clasp b so as tocorrespond to the openings a1. A moveable pressure plate c is disposedlyconfigured on a top portion of the clasp b, and a pin joint structure c1is disposedly configured in a central section of the moveable pressureplate c and between two sides of the clasp b. A spring mount b3 assuminga shape of a cylindrical shaped protrusion is disposedly configured onthe clasp b so as to correspond to a position below a front end of themoveable pressure plate c, and a spring d is insertedly configured on anouter edge of the spring mount b3, and which upwardly extends to abottom surface of the moveable pressure plate c. Furthermore, a rollpost b4 is disposedly configured in an inner side of a rear side of theclasp b. A thrust rib c2 is configured on the bottom surface of themoveable pressure plate c so as to be positioned to correspond to afront upper position of the roll post b4.

According to the aforementioned configuration, during usage, the frontend of the clasp b is first inserted into a rear end of the socket jointa, thereby enabling the clasp pieces b1 of the clasp b to be tightlyclasped within the openings a1. Thereafter, a tie belt e of the swimmingflippers is wrapped round the roll post b4, and the spring d willupwardly pushes on the front end of the moveable pressure plate c, and arear end portion of the moveable pressure plate c produces acorrespondingly downward pressure effectuated about the pin jointstructure c1 as a fulcrum. The thrust rib c2 of the moveable pressureplate c thus comes in mutual contact with the tie belt e of the rollpost b4, thereby enabling teeth e1 configured on a surface of tie belt eto be subjected to a countercheck from the thrust rib c2. After fixinglength by pulling tight on the tie belt e, if the tie belt e needs to beslackened then the front end of the moveable pressure plate c is presseddown, whereupon the spring d will be subjected to compression, whichwill result in rising up of the rear end of the moveable pressure platec, thereby enabling the thrust rib c2 to separate from the tie belt e,and the teeth e configured on the surface of the tie belt e will thus nolonger be subjected to the countercheck from the thrust rib c2, and thetie belt e can be drawn back, thus realizing slackening of the tie belte.

However, because the spring d within the conventional fastener with tiebelt adjustment function is made from metal and immersed in sea waterfor long periods of time, thus the spring d easily rusts, and therebysubject to corrosion and impairment thereof. After impairment of thespring d, the thrust rib c2 of the moveable pressure plate c is unableto continue to press tightly on the tie belt e, which thereby results inslackening of the tie belt e. If such slackening occurs during a divingsession, the swimming flippers will come away from the feet, and,without ancillary assistance of the swimming flippers, a diver willbecome stranded in the water. Hence, such loosing of the swimmingflippers is extremely dangerous for the diver during a diving session.

Furthermore, because of requirement of additional configurationinstallation of the spring d during manufacture of the conventionalfastener with tie belt adjustment function, thus production process ofthe conventional fastener is extended, and results in increase inmanpower and material costs, and a relatively higher selling price as aconsequence, which thus reduces market competitiveness.

SUMMARY OF THE INVENTION

In light of aforementioned shortcomings of a conventional fastener withtie belt adjustment function, the inventor of the present invention,having accumulated years of experience in related arts, attentively andcircumspectly carried out extensive study and exploration to ultimatelydesign a completely new structure for a fastener with tie beltadjustment function.

A primary objective of the present invention is to provide a fastenercapable of preventing detachment of a spring and impairment, and therebyachieving effectiveness of saving on costs.

In order to achieve the aforementioned objective, the fastener with tiebelt adjustment function of the present invention is primarilystructured to comprise a socket joint and a clasp, and is characterizedin that a moveable pressure plate is disposedly configured on an upperportion of the clasp, and a L-shaped flexible structural member ispositionally configured below a front end of the moveable pressureplate.

According to the aforementioned, because the L-shaped flexiblestructural member and the clasp of the fastener with tie belt adjustmentfunction of the present invention are fabricated so as to form anintegral body, and thus additional configuration of a spring isunnecessary, and is capable of preventing detachment of a spring andimpairment thereof, thereby achieving effectiveness of saving on costs.

To enable a further understanding of the said objectives and thetechnological methods of the invention herein, the brief description ofthe drawings below is followed by the detailed description of thepreferred embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an exploded elevational view according to the presentinvention.

FIG. 2 shows an assembled elevational view according to the presentinvention.

FIG. 3 shows a cross-sectional view according to the present invention.

FIG. 4 shows a cross-sectional schematic view depicting pressing down ona moveable pressure plate 3 according to the present invention.

FIG. 5 shows a cross-sectional view of a conventional fastener with tiebelt adjustment function.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIGS. 1, 2, and 3, which show a fastener with tie beltadjustment function of the present invention primarily structured tocomprise a socket joint 1, a clasp 2 and a moveable pressure plate 3,and is characterized in that:

A L-shaped flexible structural member 20 is disposedly configured in acentral portion of the clasp 2. The L-shaped flexible structural member20 and the clasp 2 are fabricated so as to form an integral body. Aperforation 21 is defined in each of left and right side walls of theclasp 2, and, moreover, a roll post 22 is further disposedly configuredinterior of a rear of the clasp 2.

A rotating shaft 30 is disposedly configured on each of two sides of themoveable pressure plate 3. The rotating shafts 30 are separatelyinsertedly configured within the perforations 21, thereby enabling themoveable pressure plate 3 to be positioned between the left and rightside walls of the clasp 2. Moreover, the moveable pressure plate 3 ispositioned above the L-shaped flexible structural member 20 thereof. Alocating piece 31 is disposedly configured on a bottom surface of afront end of the moveable pressure plate 3, and a groove 310 is definedin a bottom portion of the locating piece 31, whereby width of thegroove 310 corresponds to width of the L-shaped flexible structuralmember 20. A thrust rib 32 is further configured on the bottom surfaceat a rear end of the moveable pressure plate 3.

According to the aforementioned configuration, the fastener with tiebelt adjustment function of the present invention is so structured suchthat a tie belt 4 of swimming flippers is wrapped round the roll post22, and reversally pulled backward thereon. The tie belt 4 therebypushes on the thrust rib 32, which thus effectuates raising of the rearend of the moveable pressure plate 3, and a corresponding pressing downon the front end of same is actualized. Upon the front end of themoveable pressure plate 3 being pressed down, the locating piece 31 thuspresses down on the L-shaped flexible structural member 20, and thelocating piece 31 is prevented from separating from the L-shapedflexible structural member 20 by joining together of the groove 310 withthe L-shaped flexible structural member 20 thereof. Two symmetricaldriving forces are thereby effectuated from raising of the rear end ofthe moveable pressure plate 3 and pressing down of the front end,thereby enabling the moveable pressure plate 3 to assume a horizontalstate, and simultaneously allowing teeth 41 configured on a surface ofthe tie belt 4 to be subjected to a countercheck from the thrust rib 32of, which thus fixes length of the tie belt 4 after tightening.

Referring to FIG. 4, if a user wishes to slacken or adjust the tie belt4, the user need only press down on the front end of the moveablepressure plate 3, and the locating piece 31 of the moveable pressureplate 31 thereby subjects the L-shaped flexible structural member 20 topressure, which thus forces the L-shaped flexible structural member 20to descend, and results in a corresponding raising of the rear end ofthe moveable pressure plate 3 about the rotating shaft 30 as a fulcrum.Upon raising of the rear end of the moveable pressure plate 3, thethrust rib 32 separates from the tie belt 4, and because position of thethrust rib 32 thereby becomes higher than that of the teeth 41 of thetie belt 41, thus the teeth 41 configured on the surface of the tie belt4 will no longer be subjected to the countercheck from the thrust rib32, and thereby enables the tie belt to 4 to be drawn backward, whichthus facilitates slackening or adjusting the tie belt 4.

According to the aforementioned, because the fastener with tie beltadjustment function of the present invention utilizes the L-shapedflexible structural member 20 in replacement of a conventional spring,and the L-shaped structural member 20 and the clasp 2 are fabricated soas to form an integral body, thus additional configuration of the springis unnecessary, and, moreover, because the clasp 2 is fabricated fromplastic, hence, corrosion of the spring from being immersed in sea wateris effectively avoided, which would otherwise result in rusting andimpairment thereof, and, moreover, eliminates occurrence of detachmentof the spring, thus realizing complete guarantee of safety for a diver.

Furthermore, because the L-shaped flexible structural member 20 and theclasp 2 of the fastener with tie belt adjustment function of the presentinvention are fabricated so as to form an integral body, and thusadditional configuration of the spring is unnecessary, savings on costof manufacture and material costs of the spring is thereby realized,which thus allows for a lower product selling price, and achieveseffectiveness of enhancing market competitiveness.

In conclusion, the fastener with tie belt adjustment function of thepresent invention assuredly avoids detachment and impairment of thespring, which thereby achieves effectiveness of saving on costs, and,moreover, is provided with practicability and advancement. Accordingly,a new patent application is proposed herein.

It is of course to be understood that the embodiments described hereinis merely illustrative of the principles of the invention and that awide variety of modifications thereto may be effected by persons skilledin the art without departing from the spirit and scope of the inventionas set forth in the following claims.

1. A fastener with tie belt adjustment function comprising a socketjoint, a clasp and a moveable pressure plate, and characterized in that:a L-shaped flexible structural member is disposedly configured in acentral portion of the clasp, and the L-shaped flexible structuralmember and the clasp are fabricated so as to form an integral body, aperforation is defined in each of left and right side walls of theclasp, and, moreover, a roll post is further disposedly configuredinterior of a rear of the clasp; a rotating shaft is disposedlyconfigured on each of two sides of the moveable pressure plate, therotating shafts are separately insertedly configured within theperforations, thereby enabling the moveable pressure plate to bepositioned between the left and right side walls of the clasp, moreover,the moveable pressure plate is positioned above the L-shaped flexiblestructural member, a locating piece is disposedly configured on a bottomsurface of a front end of the moveable pressure plate, and a groove isdefined in a bottom portion of the locating piece, whereby width of thegroove corresponds to width of the L-shaped flexible structural member,a thrust rib is further configured on the bottom surface at a rear endof the moveable pressure plate.